internal static frmWebBrowser Create(string caption)
{
int?windowNo = Numerator.NextNumber;
if (!windowNo.HasValue)
{
_instanceCnt++;
windowNo = _instanceCnt;
}
frmWebBrowser frm = new frmWebBrowser();
string tmpCaption = String.Format("WebBrowser {0}", windowNo);
if (!String.IsNullOrEmpty(caption))
{
tmpCaption = caption;
}
frm.Text = tmpCaption;
frm.TabText = tmpCaption;
frm.WindowNo = windowNo;
return(frm);
}
private void OnStartNewWindow(object sender, BrowserExtendedNavigatingEventArgs e)
{
// Here we do the pop-up blocker work
// Note that in Windows 2000 or lower this event will fire, but the
// event arguments will not contain any useful information
// for blocking pop-ups.
// There are 4 filter levels.
// None: Allow all pop-ups
// Low: Allow pop-ups from secure sites
// Medium: Block most pop-ups
// High: Block all pop-ups (Use Ctrl to override)
// We need the instance of the main form, because this holds the instance
// to the WindowManager.
PopupBlockerFilterLevel lvl = PopupBlockerFilterLevel.Medium;
if (ConfigHelper.Current != null || ConfigHelper.Current.GeneralOptions != null)
{
lvl = ConfigHelper.Current.GeneralOptions.WebBrowser_PopupBlockerFilterLevel;
}
// Allow a popup when there is no information available or when the Ctrl key is pressed
bool allowPopup = (e.NavigationContext == UrlContext.None) || ((e.NavigationContext & UrlContext.OverrideKey) == UrlContext.OverrideKey);
if (!allowPopup)
{
// Give None, Low & Medium still a chance.
switch (lvl)
{
case PopupBlockerFilterLevel.None:
allowPopup = true;
break;
case PopupBlockerFilterLevel.Low:
// See if this is a secure site
if (this.browser.EncryptionLevel != WebBrowserEncryptionLevel.Insecure)
{
allowPopup = true;
}
else
{
// Not a secure site, handle this like the medium filter
goto case PopupBlockerFilterLevel.Medium;
}
break;
case PopupBlockerFilterLevel.Medium:
// This is the most dificult one.
// Only when the user first inited and the new window is user inited
if ((e.NavigationContext & UrlContext.UserFirstInited) == UrlContext.UserFirstInited && (e.NavigationContext & UrlContext.UserInited) == UrlContext.UserInited)
{
allowPopup = true;
}
break;
}
}
if (allowPopup)
{
// Check wheter it's a HTML dialog box. If so, allow the popup but do not open a new tab
if (!((e.NavigationContext & UrlContext.HtmlDialog) == UrlContext.HtmlDialog))
{
frmWebBrowser frm = WebBrowserFactory.CreateAndBrowse(e.Frame, e.Url.ToString());
e.AutomationObject = frm.browser.Application;
WebBrowserFactory.ShowWebBrowser(frm);
}
}
else
{
// Here you could notify the user that the pop-up was blocked
MessageBox.Show("Popup was blocked.\r\n" + e.Url.ToString(), "Info", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
e.Cancel = true;
}
}
private void toolStripButton11_Click(object sender, EventArgs e)
{
frmWebBrowser frm = WebBrowserFactory.CreateAndBrowse();
WebBrowserFactory.ShowWebBrowser(frm);
}
